MYSQL Tutorial

MySQL BIT_LENGTH() function

BIT_LENGTH() function

MySQL BIT_LENGTH() returns the length of the given string in bits.




Name Description
str1 A string whose BIT_LENGTH value is to be retrieved.

Syntax Diagram:

MySQL BIT_LENGTH() Function - Syntax Diagram

MySQL Version: 5.6

Video Presentation

Example: MySQL BIT_LENGTH() function

The following MySQL statement will return the length of the given string 'my text' in bits, i.e. 56.


SELECT BIT_LENGTH('my text'); 

Sample Output:

mysql> SELECT BIT_LENGTH('my text'); 
| BIT_LENGTH('my text') |
|                    56 | 
1 row in set (0.02 sec)

Example of MySQL BIT_LENGTH() function using table

The following MySQL statement will return the length of each city mentioned in pub_city column in bits.


SELECT pub_city, 
BIT_LENGTH(pub_city)  AS 'bit length' 
FROM publisher; 

Sample table: publisher

Sample Output:

mysql> SELECT pub_city, 
    -> BIT_LENGTH(pub_city)  AS 'bit length' 
    -> FROM publisher; 
| pub_city  | bit length |
| New York  |         64 | 
| Mumbai    |         48 | 
| Adelaide  |         64 | 
| London    |         48 | 
| Houstan   |         56 | 
| New York  |         64 | 
| Cambridge |         72 | 
| New Delhi |         72 | 
8 rows in set (0.02 sec)

PHP script

 <!doctype html>
 <html lang="en">
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>example-bit_length-function - php MySQL examples | w3resource</title>
 <meta name="description" content="example-bit_length-function - php MySQL examples | w3resource">
 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
 <div class="container">
 <div class="row">
 <div class="col-md-12">
 <h2>List of publisher's city and its bit length: </h2>
 <table class='table table-bordered'>
 <th>Publisher's city</th><th>Bit length</th>
 $db = "your_dbname";
 $dbh = new PDO("MySQL:host=$hostname;dbname=$db", $username, $password);
 foreach($dbh->query('SELECT pub_city,BIT_LENGTH(pub_city)
AS "bit length"
FROM publisher') as $row) {
echo "<tr>";
echo "<td>" . $row['pub_city'] . "</td>";
echo "<td>" . $row['bit length'] . "</td>";
echo "</tr>"; 

View the example in browser

JSP script

 <%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ page import="java.sql.*" %>
<%@ page import="java.io.*" %>
<!DOCTYPE html>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
try {
String Host = "jdbc:MySQL://localhost:3306/w3resour_bookinfo";
Connection connection = null;
Statement statement = null;
ResultSet rs = null;
connection = DriverManager.getConnection(Host, "root", "datasoft123");
statement = connection.createStatement();
String Data = "SELECT pub_city,BIT_LENGTH(pub_city) AS 'bit length' FROM publisher";
rs = statement.executeQuery(Data);
<TABLE border="1">
<tr width="10" bgcolor="#9979">
<td>Publisher's city</td>
<td>Bit length</td>
while (rs.next()) {
<TD><%=rs.getString("bit length")%></TD>
<%   }    %>
} catch (Exception ex) {
out.println("Can’t connect to database.");

All String Functions

MySQL String Functions, slide presentation

Many of our valued users post comments along with piece of code. Disqus may, false positively, consider those piece of code as Bad or Starnge syntax and send those comments to spam automatically. Even if that happens, we will make sure those useful comments are taken out of spam and approved. It may take a couple of days for that though, but any useful comment will be brought to public view for sure. We regret if that happend to any user. You may write us directly regarding this to - w3resource[at]yahoo[dot]com.